Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of electronics contract manufacturer Sanmina-SCI (SANM -0.74%) soared 19% today, after its quarterly results topped Wall Street expectations.

So what: Sanmina shares have slumped in 2012 on weaker-than-expected growth, but today's wide fourth-quarter earnings beat -- adjusted EPS of $0.46 versus the consensus of just $0.34 -- suggests that things are starting to turn. Management also announced a restructuring plan for two of its manufacturing facilities, which should improve operational costs and capacity utilization, giving investors plenty of optimism over its profitability going forward.

Now what: For the current quarter, management now sees adjusted EPS of $0.31-$0.37 on revenue of $1.5 billion-$1.55 billion, a little below Wall Street's estimate of $0.37 and $1.6 billion. According to Chairman and CEO Jure Sola:

Our first quarter fiscal 2013 guidance reflects continued uncertainty in the market. Though the macro-environment is challenging, we have taken action to position us for improved performance in fiscal 2013.

With the stock still off about 30% from its 52-week high and trading at a forward P/E of 6, there might even be some room left to buy into that bullishness.

Interested in more info on Sanmina? Add it to your watchlist.